Odd.. I'm not a mathfag but I did have 2 semesters of statistics and probability in college.
I was working on this very thing last night. The issue is defining the parameters. Who says a certain percentage proves anything. But... a very low probability does give you some insight.
IMO the trouble is defining the parameters.. Looks like they used 60 minutes/hour for 8 hours as a possible post interval. You gotta make a lot of rules for things like... DJT and Q have the same opportunity to post at the same time. There are not other contributing factors that would cause them to post about something. Blah.. blah.. must be totally independent opportunities.
I was trying to use a theory about rolling 2 dice and coming up doubles. But lets say the dice are (8*60) = 480 sided. What are the odds of rolling doubles. Pretty low. But then you gotta factor in how many rolls by each participant. Trump tweets about 9 times a day while Q tweets about 6.
I'm not saying this is not right, but it takes a lot for granted.. YMMV
I used the same system to dump my ex girlfriend. After seeing her and the singer in my band get off Facebook messenger within two minutes of each other 5 times a day for three weeks I surmised that it could not be chance. So when she told me she didn’t talk to him anymore, she probably lied .../ statistically speaking.